Impaired Cognitive Empathy in Outpatients with Chronic Musculoskeletal Pain: A Cross-Sectional Study.

"Conflicts of Interest The authors declare that there is no conflict of interest regarding the publication of this paper."

"We wish to extend our thanks to all the study participants for their time and effort. Also, we are grateful to the lab staff for their help with data collection and for the support from the Affiliated Jiangsu Shengze Hospital of Nanjing Medical University. This work was supported by the National Natural Science Foundation of China (grant number 81902294), the Introduced Project of Suzhou Clinical Medical Expert Team (grant number SZYJTD201725), and the National Key R&D Program of China (grant numbers 2018YFC2001600, 2018YFC2001603)."

"All participants voluntarily signed informed consent forms prior to recruitment and were compensated $15 after completing all the questionnaires. The study was approved by the Ethics Committee of the Affiliated Jiangsu Shengze Hospital of Nanjing Medical University (JSSZYY-LLSC-202019) and was registered with the China Clinical Trial Registration Center (http://www.chictr.org.cn) under the number ChiCTR2000041062."